/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: Jiang Jinxi
 * Date: 2024-09-01
 * Time: 15:59
 */
class Point{

}
class PointBuilder{
   /* public static Point makePointByXY(double x, double y){
        Point point = new Point();
        point.setX();
        point.setY();
        return point;
    }
    public static Point makePointByRA(double r, double a){
        Point point = new Point();
        point.setR();
        point.setA();
        return point;
    }*/
}
public class Demo26 {

}
